Revolving-window strip.



PATENTED MAY 19, 1903.

HIE. ESSIG. v REVOLVING WINDOW STBIP.

APPLICATION IILBD DEC. 4, 1902 HO MODEL. I

UNITED STATES Patented. May 19, 1903.

PATENT OFFICE.

HARRY E. EssIe, OF CANTON, OHIO, AssIGNOR TO THE ESSIG PIVOT WINDOWCOMPANY, OF OANTON, OHIO, A CORPORATION.

REVOLVING-WINDOW STRIP.

SPECIFICATION forming part of Letters Patent No. 728,690, dated May 19,1903.

Application filed December 4, 1902. Serial No. 133,861. (No model.)

To all whom it may concern:

Be it known that I, HARRY E. ESSIG, a citizen of the United States,residing at Canton, in the county of Stark and State of .Ohio, haveinvented a new and useful Improvement in Revolving-WVindow Strips, ofwhich the following is a specification.

My invention relates to the strips to which a revolving window-sash ispivoted on each way on its pivot; Fig. 3, a fragmentary View showing thedetail of the pivotal connection; Fig. 4, a fragmentary perspective viewof the sash and strip and pivotal connection, showing the manner ofbending or curving the strip; and Fig. 5, a cross-section ofthe sashside bar and the adjoining strips.

In this type of window the sash 1 is pivoted on its horizontal axis tothe strips 2, and the adjoining faces of the sash and the strips arecorrugated or grooved, as at 3, so that when the strip is closed in itsnormal position against the sash these corrugations or grooves engageeach other, as shown in Fig. 5.

In the pivotal connection at of the sash with.

the strip is provided a spring, as 5, which permits the strip to beforced away from the sash by the rotation of the latter, the sashstripsbeing held by the frame-strips 6, thereby disengaging the corrugationsor grooves and permitting the rotation of the windowsash on its pivots.A

The spring 5 acts to hold the stripclosely against the sash at or nearthe pivotal point at all times,and various devices have been used tohold the ends of the strips closely against the sashwhenthesashandstripsarejoined lengthwise. Among the methods ofaccomplishing this is by forming-the strips so they will bend or curveinward at either end, by which bending or curving they are always heldin close contact with the edge of the sash when the middle of the stripis forced against it 'by action of the spring 5 or otherwise. It hasbeen usual to so form the strips by sawing or cutting them in a curve orby merely bending them in that direction; but it has been found that astrip so formed will not hold its curve and will therefore cease to beeffective.

I bend or curve the strip by cutting one or more wedge-shaped notches 7across the outer side and by forcing or pressing into these notchessimilarly-shaped and slightly larger wedges '8, which act to bend orcurve the ends of the strip inward. One or more of these notches andwedges are preferably used either way from the central or pivotal pointof the strip. The wedges 8 retain their places in the notches byfriction, or-glue can be used to increase the adhesion; but to morepositively hold the wedges in position the staples 9 are preferablydriven into the strip astride of the wedges. By the use of theseexpanding wedges there is a positive bend or curve given to the stripwhich cannot be overcome except by'permanently disturbing the naturalresiliency of the wood. 7

What I claim as my invention, and desir to secure by Letters Patent, is

1. A window-strip, wedge-shaped notches across said strips,and slightlylarger simi larly-shaped wedges forced or pressed into said notches,thereby bending or curving said strip.

2. A window-strip, wedge-shaped notches across said strip, slightlylarger similarlyshaped notches forced or pressedinto said notches andstaples driven into said strip astride of the wedges.

In testimony whereof Ihave signed my name to this specification in thepresence of two subscribing witnesses.

HARRY E. ESSIG Witnesses:

ELSIE F. MALLORY, HARRY FREASE.

